wailey



l is dilated 0% new C. WQWAILEY, OF NEW ORLEANS,LOUISIANA, ASSlGNOR T0NEW 'ORLEANS PNEUMATIC-PROPELLING COMPANY.

Letters Patent No. 84,030, dated November 10, 1868.I

IMPROVEMENT IN PUMPS FOR CQIMPRESSING AIR.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern:`

. Be it known that I, C. W. NAILEY, of the city of New Orleans, parishofOrleans, and State of Louisiana, have inventeda certain nevs7 anduscfullmprovement in Pumps for Compressing Atmospheric Air, with theview of using it as a motive-power; and I do hereby declare thefollowing to be a full, clear, and exact description ofthe same,reference being had to the anneXed drawing, making a part of thisspeciiica-tion, on which is delineated a sectional view of my invention,the line of bisection being through the centre of the pump and itsvalves.

My invention consists of an improvement upon J. H. J ohnsons pump forcompressing atmospheric air,

as patented by him in the Kingdom of Great Britain,

April, 1860, said patent being numbered 890, by which the operation ofsaid pump is made perfect in the ate tainment of the end for which it isdesired.

But my invention will be better understood by referring to the drawing,on which A AA represent the main barrel of the pump, consisting oftwovertical and one horizontal section, as shown, sol as to be double,or capable'of acting at each reciprocating stroke of the plungerl orpistony with the same power. From a to a', in the Horizontal section, isthe part in Which the head B ofthe plunger Works, and which must at alltimes be filled with cold water, in order to accomplish the designedobject.

C C" are the valves through which the air enters the pump,vand also asmall stream of Water, in order to lkeep up apsurplus thereof in thebarrels, and in this Way secure a continual renewal of the said water,the carrying onc of the caloric that has been absorbed by the Water fromthe air, and the attainment of other important objects.

D D are the valves through which the air is driven out Aof the pump, andinto the reservoir or receiver in which it is to be compressed, by thewater, as itis moved by the head B of the plunger. These valves openinto and are connected by the pipe E, through which the air is impelledinto the receptacle, in which it is compressed for use, by means of aproper conduit, connecting with it at F.

To put the pump in operation, the piston is placed at its full stroke,as shown at a, and the section A of the barrel of the pump is filledWith cold water so cornpletely as not to leave a particle of open spacein it, This being done, the piston or plunger is moved, so as to bringthe head B tothe other extremity of its stroke at a'. In making thismovementof the piston-head, the water will naturally follow the same,and hence a vacuum will be established in the vertical section A. Thiswill open the valve C, and allow the air to rush in, and ill thissection of the barrel. As soon as the piston-head B has attained' thepoint or extremity of its stroke, at a', the vertical section A is inturn filled with Water in the same Way in which the section A-wasfilled, to wit, through the inductionvalve C', as the section A was lledthrough the valve C. Both vertical sections being thus iilled withwater, as Well as the horizontal section A", the pump is ready foraction. That action is as follows: When the head B of the piston ismoved back to a, the Water in the barrel A is forced upward, and the airwhich had been admitted into said barrel or section of the pump beingimpelled i'n the same direction, the valve C having been closed by thespring d, passes out through the valve D, and as there is more water inthis section of the barrel than there is space therein to contain it,every particle of air must necessarily be driven ont, and, at thesameftirne, such excess of Water as may be in the said section, alongWith it, and up through the pipe E. At the opening F there. is attacheda spiral or coiled pipe, (not shown on the drawing,) which passesupwards, and through'a tank 'of cold water, and into anothertank,wherein the water is deposited, and from which it is drawn ofi bysuitable, discharge-cocks, the air, being the lightest, remaining ontop, and hence removed from all danger of escape with the water" as thesame is drawn ofi". This arrangement secures the reduction of thetemperature ofthe air'beyond all per' adventure.

To, prevent the Water in the sections A A or' the barrel of the pump, asit is forced up in them by the reciprocating action of the plunger-headB-,pfrom impingingvvith too sudden and violent a shock against the headsG G', the inner surfaces of these heads are made concave, or arched, asshown. Thus formed, it will be seen that the Water will meet with noabrupt resistance as it is driven up against the heads, and hence, thatno severe shock can occur, while, at the same time, all the air must bedriven `out before the Water reaches the ports of the eductiou-valves DD', by the concentric environmentof it, by the up-gushin g Water, as itrises within the concavities of the heads.

The operation of the pump, Whether the piston-head move in the one orthe other direction, is precisely the same, and hence no furtherdescription is necessary.

The induction-valves C and C are held up to their seats by the spiralsprings l d', or they may be made to open and close at the proper timesby a cam, or other equivalent mechanical device.

Having thus described my invention,

What I claim, and desire to secure by Letters Patent, is-

The combination of the concave heads G and Gr', With the verticalsections, A A, of a pump, through which flows a continuous stream ofWater, when the valves of the induction-ports are placed in said heads,and are operated by the springs d and d, substantially as set forth.

C. W. WAILEY.

Witnesses:

Runes R. Rrronns, H. N, JENKINS.

